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  #1  
Old 07-03-2017, 06:04 PM
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strongmanmike (Michael)
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How's ya Pup going?

Well wadda'ya know...took a 1 sec image of bright'ol Sirius for alignment purposes...and got this nice crisp little pup...kinda cool

Sirius B

What a nice little surprise, coolest 1 sec exposure I have ever taken I recon ...and taken with just 1120mm of FL too

Not too far from the Hubble shot really either
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  #2  
Old 07-03-2017, 10:03 PM
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SimmoW (SIMON)
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Love it Mike! Sometimes the simplest pics still have deep value.

'Needs more data'

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  #3  
Old 07-03-2017, 10:04 PM
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SimmoW (SIMON)
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Oh, and i had a laughing fit when I googled 'sirius pup'
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  #4  
Old 07-03-2017, 10:22 PM
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strongmanmike (Michael)
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Hmmm yes, woof woof indeed

Wanna come over and play.....

Mike
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Old 07-03-2017, 10:26 PM
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LewisM
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Nah, that's a cosmic ray... it'll wash off with some good flats
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  #6  
Old 07-03-2017, 10:40 PM
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Atmos (Colin)
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Nice Mike, never tried it! Might give it a go tomorrow night and see how my 677mm go does
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  #7  
Old 08-03-2017, 02:30 AM
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COSMOPARADISE (Nick)
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WOW never knew there was a pup..I synced sirius a few times tonight and didnt notice it. Def gonna chase this one round the yard tomorrow night . Great pick up mike.
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  #8  
Old 08-03-2017, 08:38 AM
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Thanks Mike - an interesting view indeed!
Cheers,
Tim
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  #9  
Old 08-03-2017, 09:27 AM
Placidus (Mike and Trish)
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Hot pixel.

Absolutely awesome, Mike. Never managed to resolve it back in the C11 days even using lucky imaging and video.
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  #10  
Old 08-03-2017, 09:49 AM
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Fantastic Mike, thanks for posting.
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  #11  
Old 08-03-2017, 11:06 AM
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strongmanmike (Michael)
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Funny, yeah I thought it was a cosmic ray/hot pixel too at first, but it appeared in multiple 1 sec exposures during the centering/alignment process and always in the same spot relative to Sirius

It was so clearly resolved I was a bit surprised.

Mike
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  #12  
Old 08-03-2017, 11:17 AM
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SimmoW (SIMON)
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And Mike just won the award for 'most views for effort involved', hahaha. No stacking, no darks, no biases, no worries!

I took the same pic last night, saw it but it only reminded I need some new collimation tools....
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Old 08-03-2017, 11:21 AM
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strongmanmike (Michael)
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Quote:
Originally Posted by SimmoW View Post
And Mike just won the award for 'most views for effort involved', hahaha. No stacking, no darks, no biases, no worries!

I took the same pic last night, saw it but it only reminded I need some new collimation tools....
ha ha ha yeah, I work hard for my images Simmo

Mike
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Old 08-03-2017, 02:07 PM
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LewisM
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Quote:
Originally Posted by strongmanmike View Post
Funny, yeah I thought it was a cosmic ray/hot pixel too at first, but it appeared in multiple 1 sec exposures during the centering/alignment process and always in the same spot relative to Sirius

It was so clearly resolved I was a bit surprised.

Mike
OK, it's a hot pixel - send your CCD back to SX
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  #15  
Old 08-03-2017, 03:49 PM
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RickS (Rick)
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Nice catch, Mikey! Now put some effort into the next one
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  #16  
Old 08-03-2017, 10:00 PM
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strongmanmike (Michael)
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Nice catch, Mikey! Now put some effort into the next one
....ok
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  #17  
Old 11-03-2017, 01:14 AM
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cometcatcher (Kevin)
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That's some Sirius resolution. Pun.....
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  #18  
Old 11-03-2017, 01:21 AM
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strongmanmike (Michael)
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That's some Sirius resolution. Pun.....
...?...nup, don't get it ....
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Old 11-03-2017, 07:19 AM
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vlazg (George)
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Sirius B was the first white dwarf star discovered. Its surface is actually hotter than Sirius A's - a scorching blue-white 24,800 K - yet its total luminosity is only 1/360th of our Sun's. The only way Sirius B can be both hot and dim is to be small - only 92% the size of Earth. From its observed orbital motion and Kepler's laws, Sirius B must have a mass nearly equal to the Sun's - yet its diameter is 50 times smaller. This means that Sirius B has an incredibly high density: about 25 tons per cubic inch, compared to the Sun's density of about 0.5 ounce per cubic inch.

Isn't the universe amazing..........
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  #20  
Old 11-03-2017, 10:29 PM
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strongmanmike (Michael)
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Originally Posted by vlazg View Post
Sirius B was the first white dwarf star discovered. Its surface is actually hotter than Sirius A's - a scorching blue-white 24,800 K - yet its total luminosity is only 1/360th of our Sun's. The only way Sirius B can be both hot and dim is to be small - only 92% the size of Earth. From its observed orbital motion and Kepler's laws, Sirius B must have a mass nearly equal to the Sun's - yet its diameter is 50 times smaller. This means that Sirius B has an incredibly high density: about 25 tons per cubic inch, compared to the Sun's density of about 0.5 ounce per cubic inch.

Isn't the universe amazing..........
Yes quite incredible... and all captured in 1 sec
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